28213767

素因数分解:

$3^2\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{659}}^1$

素因数の和:803

約数の個数: 24

約数和(自身を含む): 42007680

約数和(自身を除く): 13793913

約数列:

[1, 3, 9, 67, 71, 201, 213, 603, 639, 659, 1977, 4757, 5931, 14271, 42813, 44153, 46789, 132459, 140367, 397377, 421101, 3134863, 9404589, 28213767]

約数ペア:

[(1, 28213767), (3, 9404589), (9, 3134863), (67, 421101), (71, 397377), (201, 140367), (213, 132459), (603, 46789), (639, 44153), (659, 42813), (1977, 14271), (4757, 5931)]